Liquid:

1 level tablespoon = 3 level teaspoons
1 fluid ounce = 2 tablespoons 29.57 milliliters
1 cup = 8 fluid ounces
1 pint = 2 cups = 16 fluid ounces
1 quart = 2 pints = 32 fluid ounces
1 gallon = 4 quarts = 128 fluid ounces

Volume:

1 gallon = 3785 cubic centimeters
1 gallon = 0.1337 cubic feet = 231 cubic inches
1 bushel = 1.244 cubic feet = 2150 cubic inches
1 bushel = 64 pints = 32 quarts
1 bushel = 0.04545 cubic yards
1 cubic yard = 27 cubic feet
1 cubic yard = 46656 cubic inches
1 cubic yard = 764.6 liters = 202 gallons
1 cubic yard = 807.9 quarts = 1616 pints
1 cubic yard = 764600 cubic centimeters

Distance:

1 mile = 63360 inches = 5280 feet = 1760 yards
1 mile = 160900 centimeters = 1609.3 meters
1 kilometer = 3281 feet = 0.6214 miles
1 kilometer = 1093.6 yards

Weight:

1 milligram = 0.001 gram
1000 milligrams = 1 gram
1 kilogram = 1000 grams = 35.27 ounces
1 ounce = 28.3 grams
1 pound = 16 ounces = 454 grams
1 ton = 2000 pounds = 907.2 kilograms

Area:

1 hectare = 2.471 acres = 107635 square feet
1 square mile = 640 acres
1 acre = 43560 square feet = 4840 square yards
1 square meter = 10.764 square feet

Greenhouse Volume Calculations